Automatic valve



July 5, 1932. J. P. CLINGINGSMITH' ET AL j 1,365,886

AUTOMATIC VALVE Filed July 31, 1929 2 Sheets-Sheet l will! ATTORNEY y 1932- I i J. P. CLINGINGSMITH ET AL 1,865,886

AUTOMATIC VALVE Filed July 51, 1929 2 Sheets-Sheet 2' INVENTOR BY A//' (a 1 ATTORNEY overflowing Patented .luly 5, 1932 JAMES P. cnmemesmrrn AND earner. J. sm'rrn, or nocenn, y

PA'rsNr AUTOMATIC VALVE Application filed m '31, was. Serial so; ssaeae.

This invention relates to new and useful im rovements in automatic valves.

no object of the invention is to provide a valve connected in the supply line to a storage tank and arranged so that when the liquid in said tank has reached a pre-determined level, said valve will be automatically closed and the supply of liquid by-passed to another tank or otherwise disposed of, thus avoiding the tank. I Another object of the invention is to provide a self closing valve normallylocked open and provided with a float actuated trip, whereby said valve is released and permitted to close itself when the float reaches a certain height.

A further object of. the invention is to provide the valve with means for conveniently opening it and resetting the locking means.

A construction designed to carry outthe invention will be hereinafter described together with other features of the invention.

lhe invention will be more readily understood iroin a reading of the following speciiication and by reference to the accompanyin drawin -s in which an exam le of the ine a P vention is shown, and wherein:

Figure 1 is a view showing valves constructed in accordance with the invention connected to a pair of storage tanks, one oil said valves heing closed and the other open.

Figure 2 is a side elevation of one of the valves,

Figure 3 is a vertical sectional View of the same and Figure l is a sectional view of the valve closing motor.

l'n the drawings the numeral 10 designates a liquid supply pipe which is connected in one side of a T-shaped valve case 12 having a bypass pipe 11 connected in its op osite side. A discharge pipe 13 leads from to bottom of the case.

In Figure 1, one of the discharge pipes 13 depends through the roof of a storage tank A, while the other discharge pipe extends through the root of a tank B. The lay-pass nipple llof the case and also the discharge nipple whereby valve seat rings 16 and 1'? respec- 15 are internally screw threaded,-

tively may be screwed thereinto and replaced when worn. 4

. A rock shaft 18 extends transversely through the case at the intersections oi the nipples 14 and 15. A valve 19 is fastened on said shaft by means of ears 20. The ring: 16 has a bevelled seat 16' and the rin 17 has a similar seat 17. The valve has don le hev els ltfland 170, respectively. When the valve 19 is swans upward to its open position shown in in l lines in Figure 3, the bevel 160 will engage the seat 16' and when it is lowered to its closed position, as is shown in dotted lines the hevel 170 will enga/ the seat 17'. The valve will thus efiective y seat in either its open or its closed position.

The valve roclr shalt 18 extends through a stufing hon 21 formed in the case 1% A suitable paclrin 22 surrounds the shaft and is compressed hy a follower 23. A motor housing 2% covers the follower and has a circular flange 25 receiving screws as where= by it is secured to the valve case.

The shaft extends through the housing.

@ne end of a coiled spring within the housing r is secured to the shalt and the other end is fastened to the housing. v Thisspring is under torsional tension when the valve is in its open or upright position '(llignre 3) so when the valve is released the spring motor will swing the valve down to its closed position.

@n the enter end or the it he end the housing a hand lever 28 is fastened y set screw 29 and by swinging this lever the shaft is rocked. A yolre shaped latch 3% is pivoted on the lever and has its hoolr 81 engaging over a pin 32 extending from the side or the valve case. whereby the valve 19 is held in an open position. tension spmg 33 extendslroni an ear the arm 34.- oi." the latch A tri ping rod 86 is mounted to slide ver tically t rough the root of the storage tanlr and has a heat 37 attached to its lower end. This rod may he made in. sections and con nected by a nipple 38 so that itslength may on the lever to "he changed by substituting other sections. The upper portion of the rod me he gradmated in feet and inches it desir A collar 39 is adjustabl fastened on the rod by a set screw 40. he collar has an outwardly directed annular flan e 41 and the arm 34 of the latch 30 exten into the a path of the flange.

Normally the parts are in the positions shown in full lines in Figures 1 and 2, whereby liquid flowing through the pipe is diverted by the 11 right valve 19 into the nip- 10 ple and disc arged through the pipe 13 into the tank A.- When the tank is em ty the collar 39 will rest upon a guide brac et 42 and as the liquid level in the tank ap preaches the top the float 37 will be im- 15 mersed.

When the liquid reaches its maximum level the float will elevate the rod 36 so that the flange 41 will engage the arm 34 and trip the latch 30. The tripping of the latch will lift .2 the hook 31 from the pin 32, thus permitting pipe 11 to the ipe 10 of the next ten the spring motor 27 to rock the shaft 18.

\ When the shaft is rocked the valve 19 will be swun onto the seat 17' and closed, whereby the liquid will be by-passed through file Y swinging the and lever 28 upwardly the valve may be opened and the latch reset.

Various changes in the size and shape of the different parts, as well as modifications 8 and alterations, may be made within the scope of the appended claims.

' What we claim, is:

1. In an automatic valve, a valve case, a valve hinged in the case and normally open,

36 a spring motor connected with the hingeof the valve and acting to close the same, a lever connected with the hinge of the valve and carrying a latch, said latch being engaged to hold the valve open and the spring 40 motor under restraint, a vertically movable rod mounted on the valve case and having a. projection for engaging and tripping the latch to release the lever and motor to close the valve, and a float connected with the rod. 2. In an automatic valve, a valve case having a by-pass discharge opening and a liquid discharge opening at an angle to the by-pass discharge opening, a valve hinged in the case and having a shaft extendin from the case,

a spring motor attached to t e shaft for rotating it to swing the valve from one opening to the other, and a latch for holding the motor in restraint and also for holding the valve closed at one of the openings.

3. An automatic valve as set forth in claim 12, with float operated means for tripping the atc In testimony whereof we aflix our signatures.

JALIES P. CLINGINGSMITH.

ARTHUR J. SMITH. 

